external wastegate problems?
 

alright so i've got the 35mm fake tial wastegate with a 6 psi spring. it opens fine at 6 psi and i get no spikes at all with it. the only thing is, when my car is idling and in low rpms, it sounds like a big ass exhaust leak, so i'm assuming the wg is open somehow? i never paid much attention to it b/c it functions properly and i didn't know if this was normal or not, shouldn't it stay completely shut like it's not even there until it reaches 6 psi? also the reason i think something's up with it is that my boost controller doesn't seem to be affecting it, it's still opening at 6 psi??? i have the boost controller in line between the side port on the wg and a direct source of vacuum from the im, i'm just venting the top nipple on the wg.

Re:external wastegate problems?
 

this is why man.

your boost controller has to be inline with the top nipple on your WG to work.

the bottom nipple should be a striahgt hose from IM, the top nipple should be a hose with controller inline going to it

get it? heh

Re:external wastegate problems?
 

it should be closed, the only time I've ever heard a wastegate doing that is when you hook it up on the top (wrong). Just disconnect everything off the wastegate and see if it sounds normal, it should be shut at idle with no lines going to it. If you think its open, put your hand on the dump tube and see if hot air is coming out.

Re:external wastegate problems?
 

jeff correct me if i am wrong, but u cant put the boost controller on the bottom nipple feed line..

Re:external wastegate problems?
 

i always thought the boost controller was up top and the bottom/side nipple was straight to a vacuum source, but lately all i've been hearing is top nipple = vent, side/bottom for boost controller if you're running one, and straight hook up if you're not??? so jeff, what should i do if i disconnect the lines and it is open at idle, what would cause this and how could i fix it?

Re:external wastegate problems?
 

boost controllers are always on the top nipple, because they bleed boost presure to the top of the diaphragm to prevent it from opening sooner.

which is why a boost controller can only raise boost, not lower it.

Re:external wastegate problems?
 

so should i vent the side or leave it to the im also?

Re:external wastegate problems?
 

side nip should be right to intake.

the top should have your boost controller inline with it.

itll work go try it.

Re:external wastegate problems?
 

i'll check in a little bit, i get off work in about 1/2 hour. i tried it that way with my hmbc, but i don't think that thing worked anyways. i hope that ---- works, 6 lbs is ------ old news, i'm ready for 12 ;D

Re:external wastegate problems?
 

what i did is plug off the top port and put a MBC inline with the lower port.works really well with no spik at all.